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<div class="title">qwt_point_data.cpp</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/******************************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Qwt Widget Library</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 1997   Josef Wilgen</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * Copyright (C) 2002   Uwe Rathmann</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * modify it under the terms of the Qwt License, Version 1.0</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *****************************************************************************/</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160; </div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;qwt_point_data.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#ad2980a20669d9703046e9ded9cacf496">   20</a></span>&#160;<a class="code" href="class_qwt_synthetic_point_data.html#ad2980a20669d9703046e9ded9cacf496">QwtSyntheticPointData::QwtSyntheticPointData</a>(</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;        <span class="keywordtype">size_t</span> size, <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a>&amp; interval )</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;    : m_size( size )</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;    , m_interval( interval )</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;{</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;}</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160; </div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a321754c5acac77e0e5685968b1cdfdae">   33</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_synthetic_point_data.html#a321754c5acac77e0e5685968b1cdfdae">QwtSyntheticPointData::setSize</a>( <span class="keywordtype">size_t</span> size )</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;{</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    m_size = <a class="code" href="class_qwt_synthetic_point_data.html#a8b54e4ad88d98033c758471af463fffa">size</a>;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;}</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a8b54e4ad88d98033c758471af463fffa">   42</a></span>&#160;<span class="keywordtype">size_t</span> <a class="code" href="class_qwt_synthetic_point_data.html#a8b54e4ad88d98033c758471af463fffa">QwtSyntheticPointData::size</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keywordflow">return</span> m_size;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;}</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160; </div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a1a0b2548b496affcf65272acd86c6700">   53</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_synthetic_point_data.html#a1a0b2548b496affcf65272acd86c6700">QwtSyntheticPointData::setInterval</a>( <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a>&amp; interval )</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;{</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;    m_interval = <a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">interval</a>.<a class="code" href="class_qwt_interval.html#a1d6e04b4c2c8e7fb513fbedd2f8984a6">normalized</a>();</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;}</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160; </div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">   62</a></span>&#160;<a class="code" href="class_qwt_interval.html">QwtInterval</a> <a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">QwtSyntheticPointData::interval</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    <span class="keywordflow">return</span> m_interval;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;}</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160; </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#afd90ac87b19781798961d71e59c71e5a">   78</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="class_qwt_synthetic_point_data.html#afd90ac87b19781798961d71e59c71e5a">QwtSyntheticPointData::setRectOfInterest</a>( <span class="keyword">const</span> QRectF&amp; rect )</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;{</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;    m_rectOfInterest = rect;</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;    m_intervalOfInterest = <a class="code" href="class_qwt_interval.html">QwtInterval</a>(</div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        rect.left(), rect.right() ).<a class="code" href="class_qwt_interval.html#a1d6e04b4c2c8e7fb513fbedd2f8984a6">normalized</a>();</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;}</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160; </div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a5eb51b99d54438358c77f34fe74e184e">   89</a></span>&#160;QRectF <a class="code" href="class_qwt_synthetic_point_data.html#a5eb51b99d54438358c77f34fe74e184e">QwtSyntheticPointData::rectOfInterest</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;    <span class="keywordflow">return</span> m_rectOfInterest;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;}</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#af3d4b2a43fa568b881b6fede10bc493d">  105</a></span>&#160;QRectF <a class="code" href="class_qwt_synthetic_point_data.html#af3d4b2a43fa568b881b6fede10bc493d">QwtSyntheticPointData::boundingRect</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;    <span class="keywordflow">if</span> ( m_size == 0 ||</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        !( m_interval.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() || m_intervalOfInterest.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() ) )</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;    {</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        <span class="keywordflow">return</span> QRectF( 1.0, 1.0, -2.0, -2.0 ); <span class="comment">// something invalid</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;    }</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;    <span class="keywordflow">return</span> qwtBoundingRect( *<span class="keyword">this</span> );</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;}</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160; </div>
<div class="line"><a name="l00125"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a2c15abae909ac1a97eb2e4c01f3f55f0">  125</a></span>&#160;QPointF <a class="code" href="class_qwt_synthetic_point_data.html#a2c15abae909ac1a97eb2e4c01f3f55f0">QwtSyntheticPointData::sample</a>( <span class="keywordtype">size_t</span> index )<span class="keyword"> const</span></div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;    <span class="keywordflow">if</span> ( index &gt;= m_size )</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        <span class="keywordflow">return</span> QPointF( 0, 0 );</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160; </div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> xValue = <a class="code" href="class_qwt_synthetic_point_data.html#a6ace40324b7ee16374afc013fb727042">x</a>( index );</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> yValue = <a class="code" href="class_qwt_synthetic_point_data.html#af65186bea0056b3f7f46814c61d68c99">y</a>( xValue );</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;    <span class="keywordflow">return</span> QPointF( xValue, yValue );</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;}</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160; </div>
<div class="line"><a name="l00148"></a><span class="lineno"><a class="line" href="class_qwt_synthetic_point_data.html#a6ace40324b7ee16374afc013fb727042">  148</a></span>&#160;<span class="keywordtype">double</span> <a class="code" href="class_qwt_synthetic_point_data.html#a6ace40324b7ee16374afc013fb727042">QwtSyntheticPointData::x</a>( uint index )<span class="keyword"> const</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;    <span class="keyword">const</span> <a class="code" href="class_qwt_interval.html">QwtInterval</a>&amp; <a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">interval</a> = m_interval.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() ?</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;        m_interval : m_intervalOfInterest;</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;    <span class="keywordflow">if</span> ( !<a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">interval</a>.<a class="code" href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">isValid</a>() )</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        <span class="keywordflow">return</span> 0.0;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160; </div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    <span class="keywordflow">if</span> ( m_size &lt;= 1 )</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">interval</a>.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>();</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">double</span> dx = <a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">interval</a>.<a class="code" href="class_qwt_interval.html#a200b2674f992802666b785a941b26612">width</a>() / ( m_size - 1 );</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;    <span class="keywordflow">return</span> <a class="code" href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">interval</a>.<a class="code" href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">minValue</a>() + index * dx;</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;}</div>
<div class="ttc" id="aclass_qwt_interval_html"><div class="ttname"><a href="class_qwt_interval.html">QwtInterval</a></div><div class="ttdoc">A class representing an interval.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00022">qwt_interval.h:23</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_a0df143a36d76a677976d82987cab8a06"><div class="ttname"><a href="class_qwt_interval.html#a0df143a36d76a677976d82987cab8a06">QwtInterval::minValue</a></div><div class="ttdeci">double minValue() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00192">qwt_interval.h:192</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_a1d6e04b4c2c8e7fb513fbedd2f8984a6"><div class="ttname"><a href="class_qwt_interval.html#a1d6e04b4c2c8e7fb513fbedd2f8984a6">QwtInterval::normalized</a></div><div class="ttdeci">QwtInterval normalized() const</div><div class="ttdoc">Normalize the limits of the interval.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8cpp_source.html#l00029">qwt_interval.cpp:29</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_a200b2674f992802666b785a941b26612"><div class="ttname"><a href="class_qwt_interval.html#a200b2674f992802666b785a941b26612">QwtInterval::width</a></div><div class="ttdeci">double width() const</div><div class="ttdoc">Return the width of an interval.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00227">qwt_interval.h:227</a></div></div>
<div class="ttc" id="aclass_qwt_interval_html_ad742235a737d4d0b12cba1cab2df55f3"><div class="ttname"><a href="class_qwt_interval.html#ad742235a737d4d0b12cba1cab2df55f3">QwtInterval::isValid</a></div><div class="ttdeci">bool isValid() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__interval_8h_source.html#l00210">qwt_interval.h:210</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a1a0b2548b496affcf65272acd86c6700"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a1a0b2548b496affcf65272acd86c6700">QwtSyntheticPointData::setInterval</a></div><div class="ttdeci">void setInterval(const QwtInterval &amp;)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00053">qwt_point_data.cpp:53</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a2c15abae909ac1a97eb2e4c01f3f55f0"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a2c15abae909ac1a97eb2e4c01f3f55f0">QwtSyntheticPointData::sample</a></div><div class="ttdeci">virtual QPointF sample(size_t index) const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00125">qwt_point_data.cpp:125</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a2f5943bdb60babe0782a23f6dbca2be2"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a2f5943bdb60babe0782a23f6dbca2be2">QwtSyntheticPointData::interval</a></div><div class="ttdeci">QwtInterval interval() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00062">qwt_point_data.cpp:62</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a321754c5acac77e0e5685968b1cdfdae"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a321754c5acac77e0e5685968b1cdfdae">QwtSyntheticPointData::setSize</a></div><div class="ttdeci">void setSize(size_t size)</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00033">qwt_point_data.cpp:33</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a5eb51b99d54438358c77f34fe74e184e"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a5eb51b99d54438358c77f34fe74e184e">QwtSyntheticPointData::rectOfInterest</a></div><div class="ttdeci">QRectF rectOfInterest() const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00089">qwt_point_data.cpp:89</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a6ace40324b7ee16374afc013fb727042"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a6ace40324b7ee16374afc013fb727042">QwtSyntheticPointData::x</a></div><div class="ttdeci">virtual double x(uint index) const</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00148">qwt_point_data.cpp:148</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_a8b54e4ad88d98033c758471af463fffa"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#a8b54e4ad88d98033c758471af463fffa">QwtSyntheticPointData::size</a></div><div class="ttdeci">virtual size_t size() const override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00042">qwt_point_data.cpp:42</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_ad2980a20669d9703046e9ded9cacf496"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#ad2980a20669d9703046e9ded9cacf496">QwtSyntheticPointData::QwtSyntheticPointData</a></div><div class="ttdeci">QwtSyntheticPointData(size_t size, const QwtInterval &amp;=QwtInterval())</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00020">qwt_point_data.cpp:20</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_af3d4b2a43fa568b881b6fede10bc493d"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#af3d4b2a43fa568b881b6fede10bc493d">QwtSyntheticPointData::boundingRect</a></div><div class="ttdeci">virtual QRectF boundingRect() const override</div><div class="ttdoc">Calculate the bounding rectangle.</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00105">qwt_point_data.cpp:105</a></div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_af65186bea0056b3f7f46814c61d68c99"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#af65186bea0056b3f7f46814c61d68c99">QwtSyntheticPointData::y</a></div><div class="ttdeci">virtual double y(double x) const =0</div></div>
<div class="ttc" id="aclass_qwt_synthetic_point_data_html_afd90ac87b19781798961d71e59c71e5a"><div class="ttname"><a href="class_qwt_synthetic_point_data.html#afd90ac87b19781798961d71e59c71e5a">QwtSyntheticPointData::setRectOfInterest</a></div><div class="ttdeci">virtual void setRectOfInterest(const QRectF &amp;) override</div><div class="ttdef"><b>Definition:</b> <a href="qwt__point__data_8cpp_source.html#l00078">qwt_point_data.cpp:78</a></div></div>
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